Bed-bottom.



H. O. ERSIN.

BED BOTTOM.

APPLICATION FILED JUNE 21, 1912.

1,05 3,959, Patented Feb. 18, 1913.

HAROLD O. ERSIN, OF ST. PAUL, MINNESOTA.

BED-BOTTOM.

Specification of Letters Patent.

Patented Feb. 18,1913.

Application filed June 21, 1912. Serial No. 705,028.

To all re/10m 2'25 may concern Be it known that I, HAROLD O. EnsIN, a citizen of the United States, residing at St. Paul, in the county of Ramsey and State of Minnesota, have invented a new and useful Improvement in Bed-Bottoms, of which the following is a specification.

The object of this invention is to provide an improved bottom or mattress support for beds, couches davenports and similar articles of furniture in which the several elements will be free from any tendency to sag'by long use and which may be adjusted independently, whereby a person lying or resting on one side of a bed and moving thereon will not tend to displace, raise or otherwise disturb the person resting on the other side of the bed.

Another object is to provide a woven wire fabric which may be used as a single element on the bed bottom or which may be separated longitudinally down its center leaving the mat to be used as two separate spring elements each of which is adapted for supporting a person.

Further objects are simplicity in construction and greater effectiveness in use.

In the accompanying drawings forming part of this specification, Figure l is a plan view of the bed bottom; Fig. 2 is a longitudinal section taken upon the line XX, Fig. 1, and Fig. 3 is a plan of a detail.

In the drawings the bottom is illustrated as being constructed with a rigid frame comprising two angle end bars 2 and 3 and a pair of longitudinal side bars a and The side and end bars are united by means of the brackets 6 which maintain the frame in rigid rectangular shape. The mattress support is in the form of a helical woven wire fabric or mat A occupying the space between the end bars, and secured to said bars by clamp pieces 7 or in any other usual manner. The woven wire mat is composed of a plurality of helically wound intertwined wire strands 8 of usual construction stretched sufficiently to prevent sagging when supporting ordinary loads. Its supporting strength however is reinforced for the purpose of preventing excessive sagging.

The mat A may be used in the usual manner over the entire space between the end bars of the rigid frame or it may be divided longitudinally, making two separate mats B and C by cutting the central strand 9 (shown dotted in Fig. 3) at both ends of the mat and pulling it longitudinally out of engagement wit-h its cooperating strands 10 and 11 (see Fig. 3). To reinforce the adjacent edges of the two mats B and C (see Fig. 3), a wire 12 is threaded through the strands of each of said adjacent edges and secured through openings 13 in the end bar 3. The ends of this reinforcing wire depend through the strands and are secured to ends of helical springs 1a which in turn are secured under tension to the horizontal side 15 of the end bar 2. The outer edges of mats B and C are likewise reinforced by wires 16 and tension springs 17 which are also secured to end bars 2 and 3.

The reinforcing means consist of a plurality of longitudinally disposed tension wires spaced at intervals from side to side of the frame and passing through some of the coils of the mat or mats. These wires are assembled in two separate groups D and E, one group being adapted to cooperate with that portion of the mat forming the section B and the other group with sec tion 0.

The tension wires 18 composing group D reinforcing the mat C and the wires 19 composing group E reinforcing the mat B have their portion intermediate of their ends passing longitudinally through the meshes of the mats and their ends dropped down below the mat and formed with hooks or eyes 20 at each extremity thereof engaging with the ends of helical tension springs 21 and 22. The springs 21 have their opposite ends secured through openings 23 in the horizontal side 24 of end bar 3 and the springs 22 have their opposite ends secured to cross bars 25 and 26, one bar being provided below each mat section with which the reinforcing wires are connected. Each of said draw bars is secured to the end bar 2 by means of draw bolts 27, two or any suitable number of bolts being provided for each draw bar. By adjusting the nuts on said bolts the tension of the springs 21 and 22 may be regulated and in this manner independent adjustment is provided for each set of reinforcing cords for the separate mat sections and independent adjustment is further provided for the two sides of the mat when used as a single element with the connecting strand 9 inserted.

In accordance with the patent statutes I have described the principles of operation of my invention together with the apparatus which I now consider to represent the best embodiment thereof but I desire to have it understood that the construction shown is only illustrative and that the invention can be carried out by other means and applied to uses other than those above set forth within the scope of the following claims.

Having described my invention, what i claim as new and desire to protect by Letters Patent is 2-- 1.. In a bed bottom, a frame composing longitudinal and transverse bars, a pair of helical wire fabrics each having longitudinal. interlinked helically wound strands, the ends of each of said fabrics being fastened to said transverse bars, a group of longitudinal reinforcing wires spaced apart across each of said fabrics, a portion of each of said wires being interlaced with and its ends depending from the fabric, a draw bar adjustably secured to one of said. end bars for each of said fabrics, the ends of each of said. groups of reinforcing wires being connected to one of said draw bars and one of the end bars of said frame, and resilient tension means inserted in the wires of each group; whereby independent tensional adjustment is provided for each group of reinforcing wires and each fabric is erally.

2. In a bed bottom, a frame composing longitudinal and transverse bars, a helical held distended lat wire fabric having longitudinal interlinked helically wound strands, the ends of said fabric being fastened to said transverse bars, a group of longitudinal reinforcing wires spaced apart across said fabric and divided into two groups one on each side portion of said fabric, a portion of each wire being interlaced with the strands of said fabric and its ends projecting fromv the lower side of the fabric, a draw bar for each of said groups, the ends of each of said groups of wires being connected to said adjustable draw bar and the opposite cross bar of said frame, resilient tension means interposed in said reinforcing wires, a pair of selvage wires connected to said end bars and interlaced through a pair of said intertwined strands, said pair of intertwined strands having an intermediate intertwined strand, and resilient tension means interposed in said selvage wires; whereby the removal of said intervening wire between said pair of strands divides said fabric in two, each fabric having selvaged contiguous edges, and being adjustably reinforced in tensional strength by one of said groups of wires.

In testimony whereof, I have si ned my name to this specification, in the presence of two subscribing witnesses.

HAROLD O. ERSIN. lVitnesses H. L. FISCHER, F. G. BRADBURY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

